"[At first] I thought, I wouldn't mind if it popped because then it would be like the turkey's done. Right? And it's cute," Lachey explains. "But my stylist was like, you don't want that to pop. That's like having a third nipple."

"She made me all paranoid. Every time I sneeze, I hold my belly button in ... because for some reason I think I'm going to sneeze it out," Lachey says, laughing.